examples/Base/IPC/ClientServer/Gettingstarted/transient/test/plugin.h

/*
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Description: Transient server example - plugin class 
*/


#ifndef __PLUGIN_H__
#define __PLUGIN_H__

#include <e32std.h>

template <class T> class CPlugIn
        {
        typedef T* (*TFactoryL)();
public:
        static T* NewL(const TDesC& aDllName);
        void Close();
protected:
        inline virtual ~CPlugIn() {}
private:
        RLibrary iLibrary;
        };

template <class T> T* CPlugIn<T>::NewL(const TDesC& aDllName)
        {
        RLibrary l;
        User::LeaveIfError(l.Load(aDllName));
        CleanupClosePushL(l);
        T* plugin=TFactoryL(l.Lookup(1))();
        static_cast<CPlugIn<T>*>(plugin)->iLibrary=l;
        CleanupStack::Pop();
        return plugin;
        }

template <class T> void CPlugIn<T>::Close()
        {
        RLibrary l(iLibrary);
        delete this;
        l.Close();
        }

#endif

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